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Z-Wave: update device firmware (#39623)

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@ -228,6 +228,39 @@ It's recommended to create a backup before making any major changes to your Z-Wa
- **Result**: The backup file is downloaded to the device from which you initiated the download.
4. Done! Store the backup file somewhere safe in case you need it later to restore your Z-Wave network.
## Updating the firmware of your Z-Wave device
Controllers and devices with the Firmware Update Metadata Command Class allow you to update the firmware by uploading a firmware file. In those cases, you can start the firmware update from the device page in Home Assistant. Refer to the documentation of the device manufacturer to find the corresponding firmware file. An example is the [firmware page by Zooz](https://www.support.getzooz.com/kb/article/1158-zooz-ota-firmware-files/).
{% caution %}
**Risk of damage to the device due to firmware update**
A firmware update can damage your Z-Wave device.
- Before updating your Z-Wave device, make sure an update is necessary, and that you have the correct firmware file matching your device.
- Once you have started the update process, you must not interrupt the update process but let it complete.
The Home Assistant and Z-Wave JS teams do not take any responsibility for any damages to your device as a result of the firmware update and will not be able to help you if you render your device useless due to firmware update.
{% endcaution %}
### Prerequisites
- Administrator rights in Home Assistant
- Downloaded the firmware file from the manufacturer website
### To update firmware of a Z-Wave device
1. In Home Assistant, go to {% my integrations title="**Settings** > **Devices & services**" %}.
2. Select the **Z-Wave** integration. Then, select **Configure** and select the controller.
3. Under **Device info**, select **Update**.
4. Select the firmware file that you previously downloaded to your computer.
- **Caution: Risk of damage to the device**
- Make sure you select the correct firmware file.
- An incorrect firmware file can damage your device.
- Once you start the update process, you must wait for the update to complete.
- An interrupted update can damage your device.
5. Select **Begin firmware update** and wait for it to complete.
## Resetting a Z-Wave controller
It is recommended to back up your Z-Wave network before resetting the device.